Continuous and intermittent recording instrument



l I U Jam 4 21W Q. cow'rmuous AND m'mmwsmw RECORDING msmumm QriginalFilacl April 29, 19 33 EWIGZT ENJET FREDERICK 32 RAS? ATTORNEY PatentedJan. 4, 1949 CONTINUOUS AND INTERMTTEN'I RECORDING IN STRUIKENTFrederick Q. East, Rochester, N. Y., assignor. to International BusinessMachines Corporation, New York, N. Y., a corporation of New YorkOriginal application April 29, 1943, Serial No. 485,023. Divided andthis application April 12, 1944, Serial No. 530,705

1.. This application is a division of application Serial No. 485,023,filed April 29, 1948, now Patent No. 2,424,118 of July 15, 1947, whichrelates to a device for continuously and automatically recording thepath of flight of an airplane and more particularly to a device of thetype in which a graph is drawn to record the course of flight. One ofthe objects of the invention resides in the provision of an auxiliarydevice cooperating with the recording mechanism to make an identifyingmark on the graph as it is drawn, which device is responsive to areceived signal and will accordingly indicate a point in the course offlight at which such signal is received.

A specific object of the invention is to provide a novel recordingdevice comprising dual recording elements one of which marks acontinuous line and the other marks an indication upon said line. Tothis end the second marking device is in the form of a circlesurrounding the first, pointed stylus and is arranged for relative axialmovement upon the first.

Other objects of the invention will be pointed out in the followingdescription and claim and illustrated in the accompanying drawings,which disclose, by way of example, the principle of the invention andthe best mode, which has been contemplated, of applying that principle.

In the drawings: I I

Fig. 1 is a corn'erbf the recording table showing the drive connectionsto the recording ele ments.

Fig. 2 is a sectional detail on lines 2-2 of Fig. 1.

Fig. 3 is an enlarged detail of the stylus and marking device.

Referring to Fig. 1, 90 designates the pencil or stylus holder which isthreaded on lead screw 88 and in which pencil 9| is held to trace thecourse of a vehicle on a map or other suitable surface designated 92.Lead screw 88 is supported in a carriage 85 which through a gear 86 andstationary rack 87a is movable vertically. Screw 88 has bevel gearconnection 89 with a splined shaft Ila whereby the screw 88 is turned toeffect horizontal movement of holder 90 and as explained in the parentapplication the holder may be moved in any direction by suitableoperation of shaft Ila and carriage 85.

Referring to Figs. 2 and 3, the right hand extremity .of the holder 90forms a cylindrical sleeve within which there is slidably positioned amarking device generally designated 93, which comprises a fluidreservoir and a marking wick 95 which surrounds the pencil 9|. Downwardmovement of the marking device 93 willcause a circular ring to be madeon the map 92. Pins 96 extend outwardly from the device 93, and theseare engaged by arms 91 which are slidable along a square shaft 98carried by the frames 85 and nor- 1 Claim. (Cl. 346-50) mally held inthe position shown in Fig. 2 by a suitable spring. Located beneath themap table is a solenoid 99 which, when energized, will retract itsplunger to rock a lever I00 clockwise and will move a bar |0l upwardlyand toward the right as viewed in Fig. 2, this movement being effectedthrough engagement of a pin I02 in the bar operating in an oblique slotI03 in the fixed rack 81a. The square shaft 98 has near its extremity afinger I04 which extends over the upper edge of bar l0! so that, whenthe bar is elevated, shaft 98 will rock clockwise as viewed in Fig. 2 tooperate the circular marking device. With this construction the markingdevice may be in any position on the map table and will be responsive toenergization of magnet 99 in any position.

While there have been shown and described and pointed out thefundamental novel features of the invention as applied to a singlemodification, it will be understood that various omissions andsubstitutions and changes in the form and details of the deviceillustrated and in. its operation may be made by those skilled in theart without departing from the spirit of the invention. It is theintention therefore to be limited only as indicated by the scope of thefollowing claim.

What is claimed is:

In combination, a stylus movable across a surface to record a continuousline thereon, a mark- .ing device comprising a circular marking wick andan enclosed ink reservoir connected thereto, said wick and reservoirsurrounding the stylus and normally spaced from the said surface, andmeans for effecting a straight line reciprocation of the marking devicein a direction parallel to the axis of the stylus to deposit an ink ringupon the line traced by the stylus.

FREDERICK Q; RAST.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS I

